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Remedial Action Plan RE: 425 W. Larch Street, Tracy, CA October 1 , 2008 W&A Project No. : FTIM-08-002 I Summary of Remedial Alternative Costs Frontier Transportation, Inc. 425 W. Larch Road Tracy, CA 95376 Remedial Alternative Assumptions Cost Dual Phase Extraction The DPE system will consist of 2 new 1 . Well Installation (2 wells) $22,500 extraction wells and 3 existing wells, with 2. Application to sewer $3,000 each well extracting approximately 5 gpm. 3 . Design, Equipment, Permitting and The treatment system will consist of three Construction $210,000 1000-pound carbon vessels and associated 4. Life Cycle (O&M-3 years) $37,000 instrumentation to monitor flow and 5. Sewer Fees (3 years) $325000 control performance. The hermal oxidizer 6. Utility Cost (O&M-3 years) $48,000 will have a 20 hp liquid ring blower. 7. Laboratory Cost (O&M-3 years) $26,500 Disposal to sewer is assumed possible. 8. Monitoring Cost (3 yrs + 3 yrs) $204,000 Operation of the DPE system is assumed to reduce COC concentrations to levels approaching cleanup goals/NA in approximately 3 years, hence this time period is used for estimating life cycle and Total $5839000 utility costs. Post remedial groundwater monitoring for an additional 3 years after completion of DPE is assumed. Chemical Oxidation The installation of 5 ozone sparge wells is 1 . Design & Permitting $103000 _ using Ozone needed to provide coverage to the known 2. Well Installation ( 5 Wells) $32,000 plume. Ozone system to be purchased is 3 . Equipment and Construction $ 1525000 capable of generating ozone at a rate of 2.5 4. Life Cycle (O&M-3 years) $34,000 lbs/day. Active remediation for a period 5 . Laboratory Cost (O&M-3 yrs) $6000 of 3 years will be needed to reach 6. Utility Cost (O&M-3 years) $4,000 remediation goals; 3 years of additional 7. Monitoring Cost (3 yrs + 3 yrs) $204,000 post-remedial mon/sampling/reporting. Total $5005000 VVWvxo . o `6ass INC.res, .: r.».�,. NC. I M